Cooling explosive-motors.



No. 693,529. Patented Feb. l8, I902.

T. MYERS.

GUDUNG EXPLOSIVE MOTORS.

(Application filed Feb. 14, 1901.) (No Model.) 3 Shee'ts-Sheet l.

WITNESSES: VENTOH m: "cams PEYER$ co PHOTO-LITNON msnmc-Yon. a c.

No. 693,529. Patented Feb. I8, I902.

T. MYERS.

(I-(JOLINI? EXPLOSIVE MOTORS.

(Application fllad Feb. 14, 1901.) (No Model.) 3 Sheets-Sheet 2.

WITNESSES ma NORRIS FEYERS (2a.. wm'uuma. WASNINGYOM a. c.

No. 693,529. Patented Feb. 18, I902.

T. MYERS.

COOLING EXPLOSIVE MOTORS.

(Application-filed Feb. 14, 1901.) (No Model.) 3 SheetsSheat 3.

I WITNESSES: INVENTOH %W4 2 @W I 1 t w B) c0 (a A'ITOH m: scams PETEKScc. vncm-uwa, WASHINGTON n. c

UNiTnn STATES PATENT @rrrcn.

THOMAS MYERS, OF NEl/V YORK, N. Y.

COOLING EXPLOSlVE-MOTORS.

SPEGlFICATIQN forming part of Letters Patent No. 693,529, dated February18, 1902. Application filed February 14, 1901. Serial No. 47,972. (Nomodel.)

To all whom 232 may concern:

Be it known that I, THOMAS MYERS, asubject of the King of Great Britain,and aresident of NewYork, in the countyof New York and State of NewYork, have invented certain new and useful Improvements in CoolingExplosive-Motors, of which the following is a specification.

My invention relates to motors, and especially that class of motorsknown as explosive-motors, in which hydrocarbons are employed togenerate the power.

My invention relates particularly to the means for and the method ofcooling the cylinder and exterior of the explosivechamber and theexhaust valve and passages.

The objects of my invention are, first, to secure adequate cooling ofthe walls of the cylinderand exhaust parts and exterior of theexplosion-chamber and related parts; second, to simplify the process ofand the means for accomplishing this end; third, to reduce the number ofparts and their weight; fourth, to reduce the cost of construction;fifth, to increase the efficiency and durability of the motor, and,sixth, to facilitate the operation and manipulation of the motor. Iattain these objects by the methods and means described and illustratedin the following specification and the accompanying drawings, in whichsimilar numerals refer to similar parts throughout the several views.

Prior to my invention it has been found necessary to cool the cylindersand exterior of the explosion chambers, the exhaustvalves, and otherportions of hydrocarbonmotors either by circulating water about the sameor by providing the cylinder with eX- ternal ribs or vanes, presenting acomparatively large surface to the cooling edect of the surrounding air.Some efiorts have been also made to force air in the place of waterthrough portions of the surrounding jackets;

but none of these methods or means have been proved effective orsatisfactory for the following reasons: First, in the case ofwater-cooled cylinders it is necessary to provide a reservoir for thewater, a pump to circulate the latter, a radiating device to cool thewater after it has absorbed the heat from the cylinder, and thenecessary piping between these various parts. It will be evident thatthis necessitates great weight, complication and crowding of the variousparts, besides the danger of leaks, of freezingoi' the water,obstruction and deterioration-of the parts, and a very materially greatexpense therefor. The air-cooled motors have heretofore proved even lesssatisfactory than those cooled by water, for while they avoid many ofthe objectionsinherentin the latter and while some of them when limitedto small dimensions may operate successfully for a limited time andunder favorable conditions they have heretofore either proved at onceentirely inadequate and unsuccessful or else have failed in continuedand serious test, due to the fact that they cool but a limited portionof the heated parts and that only when passing through the air veryrapidly. By my invention, however, I am enabled not only to'avoid allthe objections above alleged against both the air-cooled and theWater-cooled motors,

but am enabled to effectively and continuously produce the desiredeffect and attain the objects sought and above mentioned.

Figure 1 is a vertical section of a motor embodying my invention in theplane passing through the center of the cylinder and the crank-shaft inthe direction of its length. Fig. 2 is a plan view with top ofjacket-casing removed and omitting certain parts not constituting myinvention. Fig. 3 is a front elevation of the motor half in section andshowing the disposition of the vanes and ribs. The fan is shown indotted lines.

Referring now to the figures, in Fig. 1, 1 is the cylinder; 2, thepiston; 3, the con necting-rod; 4, the main or crank shaft; 5, theexhaust-valve; 6, ribs preferably cast on the outside of the cylinderradially and longitudinally; 7, the exhaust-opening; 8, the passage fromcylinder to exhaust-valve; 9, the inlet or valve; 10, the case of thelatter. 11 is a jacket covering substantially the whole cylinder. 12 isan annular space between the cylinder and the jacket below the ribs 6.13 is a passage connecting 12 with the fan-case 14, and 17 is a fanmounted on shaft 4:. 15 and 16 (see also Figs. 2 and 3) are ribspreferably cast upon and surrounding the exhaust valve and passage, 1515 being horizontal, 16 16' inclined, and 16 vertically disposed and allso arranged that the air-spaces or I) o' d efg h 2' it between themcommunicate with the various air-spaces between the longitudinal ribs 6,cast upon the cylinder, and it will be particularly noticed that theinclined and vertical vanes 16 16 lead over the top of the exhaust valveand passage and over the top of the cylinder-head, communicatingparticularly with the longitudinal air-spaces at the back of thecylinder.

In Fig. 2 especially the arrows indicate the flow of air between thevanes and into the respective air-passages.

The operation of my invention is as follows: As the exhaust-valve 5 andadjacent parts, as 7 8; &c. are the hottest, it is especiallyneedful toproduce the greatest cooling effect at the place where they are located.Therefore I preferably make this point the inlet for my air, since theair is of course coolest at the inlet. The ribs 15 15 besides acting asa radiating-surface to dissipate the heat, also serve to deflect orguide the air as it passes in through the spaces indicated by theletters a b o (1 cf g h '6 It. (See Fig. 1, and especially Figs. 2 and3.) Afterpassing over and about the hot passages 7 8 of the exhaustmechanism and some of it over the hot cylinder-head, the

I exterior of which it cools in so doing, the air portion thereof.

that this process may be reversed and the air drawn in at the fan andafter surrounding the cylinder be expelled through ab 0 d e f g h '5 k;but I consider the other method preferable, because when the air isdrawn in at the fan it becomes heated in passing up along thecylinder-walls and over the cylinder-head and is hottest as it passesout over the exhaust passages and valve, where it should be coolest.

While I do not claim, broadly, the method or means for coolingexplosive-motor cylinders by the circulation of air about the same,

What I do claim, and desire to secure by Letters Patent, is-

In an explosive motor, the combination of a cylinder, a plurality ofribs extending longitudinally upon the same, a jacket surrounding thecylinder and. provided with an airinlet near the exhaust, an annularspace arranged between the jacket and the cylinder surrounding the lowerpart of the latter below the ribs, a fan mounted upon the crankshaft torotate therewith, a casin g for said fan, and a passage communicatingfrom the aforesaid annularspace to said fancasin g 3 together with ribsupon the head of the cylinder surrounding the e'xhaust-passage, saidribs being arranged to deflect a current ofair into the passage existingbetween the various longitudinal ribs.

Signed at New York, in the county of New York and State of New York,this 11th day of February, A. D. 1901.

THOMAS MYERS.

\Vitnesses:

D. H. BATES, Jr., CHAS. TOPPING.

